Everyone's Blog Posts - QRQcw2019-01-21T23:22:11Zhttp://qrqcwnet.ning.com/profiles/blog/feed?xn_auth=noturn an OLD 1 cpu LAPTOP into a high performance QRQ CW KEYBOARD KEYER for the ELECRAFT K3Stag:qrqcwnet.ning.com,2019-01-03:1993813:BlogPost:359242019-01-03T17:57:50.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/D1QWMVqVUiU?wmode=opaque" width="560"></iframe>
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<p>this video demo's using an old 1 CPU laptop as an AFCW mode, QRQ CW KEYBOARD KEYER for an ELECRAFT K3S by using the K3S USB SOUND CARD and AFCW MODE, for keying QRQ CW with the AD5DZ software CW KEYBOARD into the K3S USB SOUND CARD's LINE INPUT...the K3S VOICE VOX CIRCUIT menu setting is "ON"</p>
<p>the old laptop is using the latest release of…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/D1QWMVqVUiU?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p>this video demo's using an old 1 CPU laptop as an AFCW mode, QRQ CW KEYBOARD KEYER for an ELECRAFT K3S by using the K3S USB SOUND CARD and AFCW MODE, for keying QRQ CW with the AD5DZ software CW KEYBOARD into the K3S USB SOUND CARD's LINE INPUT...the K3S VOICE VOX CIRCUIT menu setting is "ON"</p>
<p>the old laptop is using the latest release of antiX linux os...which is one of the best distros i have used for this old 1 CPU laptop...</p>
<p>BASIC SETUP</p>
<p>take a USB CABLE from the K3S USB PORT on its rear panel and run it over to the OLD LAPTOP's USB PORT....</p>
<p>use JACK AUDIO CONNECTION KIT on the old laptop, and use the K3S USB SOUND CARD as the JACK AUDIO CONNECTION KIT's AUDIO DEVICE for the old laptop...</p>
<p>load the AD5DZ software CW KEYBOARD on the old laptop<br/>load the AD5DZ software CW KEYER on the old laptop</p>
<p>the AD5DZ CW KEYBOARD will send a 5.68 khz tone to activate the K3S VOICE VOX CIRCUIT, and put the RIG in TRANSMIT READY MODE the AD5DZ CW KEYER will be sending the actual cw tone<br/>NOTE: normally the VOICE VOX CIRCUIT takes some milliseconds of time to take the first bits of audio, analyze it, and then activate the PTT, in QRQ CW , this delay chops off the first bits of any cw element that the VOX CIRCUIT, after being "reset", will use once again to activate the PTT...and this makes qrq cw sound a bit erratic and choppy...etc... so to prevent this from happening... to preserve the timing of EVERY cw element, a VOX ACTIVATION TONE will be sent FIRST, ahead of the actual cw tone that will be converted to RF and TRANSMITTED out the antenna...</p>
<p>the VOX TONE is a high pitched, - 20 db low volume cw element with a pitch of 5.68 khz, and a rise/fall time of 1.3 milliseconds(must have a little rise/fall time to prevent key clicks &amp; harmonic distortion etc..) NOTE: the 5.68 khz tone is way too high of a pitch to get transmitted by the transmit circuits of the K3S...and being way below the volume of the actual cw pitch...too...less than 5 millivolts::50 ohm load, actually reaches the antenna as RF energy...and this is at full power 100 watts on the K3S</p>
<p>the CW TONE is delayed by 15 milliseconds...which gives the first VOX TONE a chance to fully bring the RIG into TRANSMIT READY MODE...so that NO cw elements get chopped off ...</p>
<p>There are many other videos about this kind of setup in this channel, however, what is unique about this particular version of the setup, is using only the AD5DZ cw keyer, kbd as the TONE GENERATOR for both the CW TONE and the VOX TONE...</p>
<p>the K3S VOX HOLD setting on its menu was set to its lowest value for this demo.... ".01 ms" At this value, you can hear QSK RECEIVE AUDIO between letters during the CW being sent from the text file the AD5DZ CW KEYBOARD is using for this example...</p>
<p>the SCOPE view, shows the CW WAVEFORM as it is on the K3S TRANSMIT MONITOR ...and shows that there are no CHOPS on any of the CW ELEMENTS using this method...each cw looks exactly like the original cw output from the AD5DZ CW KEYER's CW AUDIO OUTPUT etc..</p>Remote Rig Operations with the Elecraft K3S - using just its USB PORT and a Raspberry PItag:qrqcwnet.ning.com,2018-12-27:1993813:BlogPost:361222018-12-27T17:00:08.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/i74_3WaN4LM?wmode=opaque" width="560"></iframe>
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<p>LIVE DEMO of remote rig operations for CW using a software CW KEYBOARD, PADDLES and a STRAIGHT KEY at the remote site, as well as VOICE from the REMOTE LOCATION....</p>
<p>The ELECRAFT K3S has its own USB SOUND CARD, it will be used for AUDIO OVER IP and SERIAL COMMANDS over IP<br></br>to send and receive audio between the RIG and the REMOTE…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/i74_3WaN4LM?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p>LIVE DEMO of remote rig operations for CW using a software CW KEYBOARD, PADDLES and a STRAIGHT KEY at the remote site, as well as VOICE from the REMOTE LOCATION....</p>
<p>The ELECRAFT K3S has its own USB SOUND CARD, it will be used for AUDIO OVER IP and SERIAL COMMANDS over IP<br/>to send and receive audio between the RIG and the REMOTE OP<br/>and to adjust the RIG's control over the USB SERIAL CONNECTION</p>
<p>a Raspberry pi is used as an interface between the RIG and the REMOTE OP....the RASPBERRY PI is going to use the K3S usb sound card as 'ITS' soundcard, and transfer all audio to and from the remote op to the RIG</p>
<p>the RASPBERRY PI will also use the USB PORT as a serial interface so that FLrig on the PI can be used over REALvnc by the REMOTE OP to adjust the RIG's controls</p>QRQ CW Transmit Audio Filtering - to reduce drastically your RIG from transmitting RF CW EDGE NOISE Harmonicstag:qrqcwnet.ning.com,2018-12-23:1993813:BlogPost:356222018-12-23T13:30:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p>Even at 8.3 ms RISE and FALL time, as was used in this test setup, which is even more than the usual COMMERCIAL RIG's RAISED COSINE WAVE SHAPE, the amount of CW EDGE NOISE harmonic energy that you will still transmit above and below the actual CW PITCH, when sending at QRQ CW - say at 90 wpm, is shown here in this Spectrum Analyzer view below:…</p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/478502092?profile=original" rel="noopener" target="_blank"><img class="align-full" src="https://storage.ning.com/topology/rest/1.0/file/get/478502092?profile=original"></img></a></p>
<p>Even at 8.3 ms RISE and FALL time, as was used in this test setup, which is even more than the usual COMMERCIAL RIG's RAISED COSINE WAVE SHAPE, the amount of CW EDGE NOISE harmonic energy that you will still transmit above and below the actual CW PITCH, when sending at QRQ CW - say at 90 wpm, is shown here in this Spectrum Analyzer view below:</p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/478502092?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/478502092?profile=original" class="align-full"/></a></p>
<p></p>
<p>However, if you filter your CW NOTE before it goes to TRANSMIT, you can virtually eliminate ALL of the HARMONICs above and below your CW PITCH as shown below: and transmit a "purer" CW NOTE</p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/478522536?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/478522536?profile=original" class="align-full"/></a>as, you can see, virtual all of the harmonics above and below the CW PITCH(808 hertz) in this example has been eliminated by the CW AUDIO FILTER CHAIN as will be shown below...there are 3 filters...HP, LP, BP</p>
<p></p>
<p>1. HIGH PASS FILTER <a href="https://storage.ning.com/topology/rest/1.0/file/get/478557859?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/478557859?profile=original" class="align-full"/></a></p>
<p></p>
<p>2. LOW PASS FILTER</p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/478564184?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/478564184?profile=original" class="align-full"/></a></p>
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<p>3. BANDPASS FILTER</p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/478571929?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/478571929?profile=original" class="align-full"/></a>This also assists in getting rid of virtually all of the CW EDGE PERCUSSIVE AUDIO NOISE QRM that you would otherwise hear when listening at 90 wpm</p>
<p></p>
<p>NOTE: this is designed for AFCW MODE(A2 mode), since you usually can not alter your RIG's CW NOTE before it goes to TRANSMIT in the typical A1 MODE of sending CW</p>
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<p>Here is what the FINAL 90 wpm DIT looks like on the AUDIO SCOPE</p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/481957057?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/481957057?profile=original" class="align-full"/></a></p>
<p></p>
<p>Here is an example of what QRQ CW sounds like at 90 wpm using this cw audio filtering scheme </p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/l2UHpwi6Pj4?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p>CALF STUDIO GEAR</p>
<p><a href="https://calf-studio-gear.org/" target="_blank" rel="noopener">https://calf-studio-gear.org/</a></p>QRQ CW qso'N over Gstreamer - Morse Code "audio OVER ip" using the FLAC Audio Codectag:qrqcwnet.ning.com,2018-12-18:1993813:BlogPost:353412018-12-18T16:00:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/ZZQysQJt0V4?wmode=opaque" width="560"></iframe>
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<p>brief demo of what QRQ CW morse code audio tones sound like using the FLAC AUDIO CODEC on Gstreamer Pipelines</p>
<p>NOTE: the QRQ CW AUDIO you are hearing, if what the FLAC encoded CW AUDIO sounds like after decoding it finally on the LAPTOP(Lubuntu 18.04)</p>
<p>the QRQ CW AUDIO stream starts on the LAPTOP goes to the PI over wired Ethernet,…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/ZZQysQJt0V4?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p>brief demo of what QRQ CW morse code audio tones sound like using the FLAC AUDIO CODEC on Gstreamer Pipelines</p>
<p>NOTE: the QRQ CW AUDIO you are hearing, if what the FLAC encoded CW AUDIO sounds like after decoding it finally on the LAPTOP(Lubuntu 18.04)</p>
<p>the QRQ CW AUDIO stream starts on the LAPTOP goes to the PI over wired Ethernet, through routers &amp; switches... then the PI re-encodes what it is receiving from the laptop and sends it right back to the laptop(basically a loopback formation on the PI)</p>
<p>HERE ARE THE Gstreamer SCRIPTS USED: "gst-launch-1.0"</p>
<p>NOTE: the FLAC CODEC on GSTREAMER has a default quality encoding setting of "5" ...so...just to see how well the CW NOTE audio quality could be encoded and decoded using FLAC at its lowest quality setting, a FLAC QUALITY SETTING of "zero" was used...and it turned out...at "ZERO", FLAC encodes faster with less strain on the CPU... and there was no degradation of the final received CW NOTE spectrum or waveshape when decoding it back to CW AUDIO</p>
<p></p>
<p>send audio from LAPTOP to a Raspberry PI 2b<br/> *******************************************************************<br/> qrq@qrq:~$ gst-launch-1.0 -v jackaudiosrc ! audioconvert ! flacenc blocksize=128 quality=0 ! udpsink host=192.168.1.130 port=5005</p>
<p>receive audio from LAPTOP on the Raspberry PI 2b<br/> *******************************************************************<br/> pi@raspberrypi ~ $ gst-launch-1.0 -v udpsrc port=5005 ! flacparse ! flacdec ! audioconvert ! jackaudiosink buffer-time=60000 blocksize=128</p>
<p>send audio from the Raspberry PI 2b to the LAPTOP<br/> *******************************************************************<br/> pi@raspberrypi ~ $ gst-launch-1.0 -v jackaudiosrc ! audioconvert ! flacenc blocksize=128 quality=0 ! udpsink host=192.168.1.101 port=5006</p>
<p>receive audio from Raspberry PI2b on the LAPTOP<br/> *******************************************************************<br/> qrq@qrq:~$ gst-launch-1.0 -v udpsrc port=5006 ! flacparse ! flacdec ! audioconvert ! jackaudiosink buffer-time=60000 blocksize=128</p>
<p>NOTE: the CW that is heard is from a software cw keyboard is used to send a text file from TOM's , W4BQF , famous article about QRQcw<br/> <a href="https://sites.google.com/site/tomw4bqf/copyingcwover70wpm">https://sites.google.com/site/tomw4bqf/copyingcwover70wpm</a></p>
<p><a href="https://gstreamer.freedesktop.org/">https://gstreamer.freedesktop.org/</a></p>
<p></p>QRQ CW over the OGG VORBIS audio codec - LIVE DEMO using Gstreamer TCP "audio OVER ip" scriptstag:qrqcwnet.ning.com,2018-12-12:1993813:BlogPost:354302018-12-12T15:07:20.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p></p>
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/MkkJHD7RQ7k?wmode=opaque" width="560"></iframe>
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<p>test by sending a QRQ CW test file from TOM's W4BQF famous article:<br></br><a href="https://sites.google.com/site/tomw4bqf/copyingcwover70wpm">https://sites.google.com/site/tomw4bqf/copyingcwover70wpm</a></p>
<p>software CW KEYBOARD by AD5DZ:<br></br><a href="https://youtu.be/l8wKVnA4oGc">https://youtu.be/l8wKVnA4oGc</a></p>
<p>RASPBERY PI…</p>
<p></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/MkkJHD7RQ7k?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p>test by sending a QRQ CW test file from TOM's W4BQF famous article:<br/><a href="https://sites.google.com/site/tomw4bqf/copyingcwover70wpm">https://sites.google.com/site/tomw4bqf/copyingcwover70wpm</a></p>
<p>software CW KEYBOARD by AD5DZ:<br/><a href="https://youtu.be/l8wKVnA4oGc">https://youtu.be/l8wKVnA4oGc</a></p>
<p>RASPBERY PI GSTREAMER OGG VORBIS SCRIPTS USED:<br/>*******************************************************************<br/>TRANSMIT TO THE REMOTE LAPTOP<br/>pi@raspberrypi ~ $ gst-launch-1.0 -v jackaudiosrc ! audio/x-raw, endianness=1234, signed=true, width=16, depth=16, rate=48000, channels=1 ! audioconvert ! vorbisenc quality=1 ! identity silent=true sync=true ! oggmux max-delay=50 max-page-delay=50 ! tcpserversink host=192.168.1.130 port=4000</p>
<p>RECEIVE AUDIO FROM THE REMOTE LAPTOP<br/>pi@raspberrypi ~ $ gst-launch-1.0 -v tcpclientsrc host=192.168.1.101 port=4001 ! oggdemux ! vorbisdec ! audioconvert ! "audio/x-raw, layout=(string)interleaved, rate=(int)48000, format=(string)S16LE, channels=(int)2, channel-mask=(bitmask)0x0000000000000003" ! queue ! audioconvert ! audiorate ! audioresample ! queue ! jackaudiosink</p>
<p><br/>GSTREAMER SCRIPTS used on the LINUX LAPTOP(Lubuntu 18.04)<br/>******************************************************************<br/>TRANSMIT TO THE PI<br/>qrq@qrq:~$ gst-launch-1.0 -v jackaudiosrc ! audio/x-raw, endianness=1234, signed=true, width=16, depth=16, rate=48000, channels=2 ! audioconvert ! vorbisenc quality=1 ! identity silent=true sync=true ! oggmux max-delay=50 max-page-delay=50 ! tcpserversink host=192.168.1.101 port=4001</p>
<p>RECEIVE AUDIO FROM THE PI<br/>qrq@qrq:~$ gst-launch-1.0 -v tcpclientsrc host=192.168.1.130 port=4000 ! oggdemux ! vorbisdec ! audioconvert ! audioresample ! jackaudiosink</p>
<p><br/>was reading this page and it helped me to write up the scripts used in this experimental video example <a href="https://stackoverflow.com/questions/14140893/gstreamer-stream-vorbis-encoded-audio-over-network?rq=1">https://stackoverflow.com/questions/14140893/gstreamer-stream-vorbis-encoded-audio-over-network?rq=1</a></p>Don't TRUST the ELECRAFT K3S transmit input monitor to accurately represent what is transmittedtag:qrqcwnet.ning.com,2018-12-11:1993813:BlogPost:353382018-12-11T13:30:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p>here is a brief VIDEO to demo the problem with the K3S transmit input monitor when operating AFCW transmit MODE</p>
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/_QaEXCsAbdY?wmode=opaque" width="560"></iframe>
</p>
<p>brief demo showing the ELECRAFT K3S transmitting QRQ CW in FULL QSK with RX AUDIO between LETTERS...AND while you are listening to the K3S input TRANSMIT audio monitor - it sounds like everything is ok and working well...even…</p>
<p>here is a brief VIDEO to demo the problem with the K3S transmit input monitor when operating AFCW transmit MODE</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/_QaEXCsAbdY?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>brief demo showing the ELECRAFT K3S transmitting QRQ CW in FULL QSK with RX AUDIO between LETTERS...AND while you are listening to the K3S input TRANSMIT audio monitor - it sounds like everything is ok and working well...even while looking at the SCOPE VIEW...you see that every cw element is in perfect form, and the RX audio between the letters that are being sent is present and accounted for....<br/> - UNTIL -<br/> you monitor your transmit CW signal on a 2nd receiver...and to your horror, you hear that the K3S is actually missing cw elements all over the place...</p>
<p>- the K3S INPUT MONITOR can not to be trusted to accurately represent what you hear and think will be transmitted when sending QRQ CW in AFCW mode in FULL QSK</p>
<p><strong>NOTE: THE K3S RIG CONFIGURATION FOR THIS VIDEO:</strong></p>
<p><span>the PTT-RLS config setting for this video demo - is at ZERO</span></p>
<p><span>here is a snapshot of the delayed behavior of the K3S PTT circuit - with the PTT-RLS setting at ZERO --- PTT is still showing an additional, extra 12 milliseconds of further delay in closing <a class="yt-simple-endpoint style-scope yt-formatted-string" href="https://www.youtube.com/redirect?stzid=UgwbbWRNW6jLjNzoGKZ4AaABAg.8omDbIqwzvX8onkKNmoc2l&amp;event=comments&amp;redir_token=AXX9rV8uo0oP4d27A1dfNCBhdi98MTU0NTE2MDkwN0AxNTQ1MDc0NTA3&amp;q=https%3A%2F%2Fimgur.com%2FT2DZRRy" rel="nofollow">https://imgur.com/T2DZRRy</a></span></p>
<p>***************************************************************************************************************************</p>
<p>UPDATE: 12-17-2018...<em><strong>some email replies about these K3S qrq full qsk issues - from WAYNE of ELECRAFT:</strong></em></p>
<p><span>"...8 ms is the shortest value of <strong>TX</strong>[RF] <strong>DELAY</strong>[on the K3S], so you have things set up correctly. "</span></p>
<p><span>"Any transceiver that uses DSP has what's called a "pipeline" delay associated with signal processing (filters, phase shifts, decimation, etc.). Typically this delay is about 15 to 20 ms depending on how filters are set up. Narrow filters take longer..."</span></p>QSO QRQ CW with a friend(s) using Gstreamer - send along a PICTURE of yourself with your QRQcw audiotag:qrqcwnet.ning.com,2018-11-13:1993813:BlogPost:354252018-11-13T15:00:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><span style="font-size: 14pt;"> </span><span style="font-size: 18pt;"><span style="font-size: 14pt;">in HONOR of the late GREAT SK - WILD BILL - KB9XE </span> </span></p>
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/JwJ356oWa5c?wmode=opaque" width="560"></iframe>
</p>
<p>demo of this - honoring the late great QRQcw OP</p>
<p>"WILD BILL", KB9XE</p>
<p>here are the Gstreamer scripts used for this example:</p>
<p>SEND a jpeg picture to…</p>
<p><span style="font-size: 14pt;"> </span><span style="font-size: 18pt;"><span style="font-size: 14pt;">in HONOR of the late GREAT SK - WILD BILL - KB9XE </span> </span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/JwJ356oWa5c?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>demo of this - honoring the late great QRQcw OP</p>
<p>"WILD BILL", KB9XE</p>
<p>here are the Gstreamer scripts used for this example:</p>
<p>SEND a jpeg picture to the "other" QRQ CW OP<br/> *********************************************************************<br/> gst-launch-1.0 -v filesrc location=/home/qrq/kb9xe.jpeg ! decodebin ! videoconvert ! imagefreeze ! jpegenc ! udpsink host=(ip address of the other QRQ CW OP) port=5007</p>
<p>SEND your QRQ CW AUDIO to the "other" QRQ CW OP<br/> *********************************************************************<br/> gst-launch-1.0 jackaudiosrc ! audio/x-raw,channels=1 ! audiorate ! audioconvert ! opusenc bitrate=256000 frame-size=2.5 ! rtpopuspay ! udpsink host=(ip address of the other QRQ CW OP) port=5008</p>
<p>RECEIVE jpeg picture from the "other" QRQ CW OP<br/> *******************************************************************<br/> gst-launch-1.0 -v udpsrc port=5007 ! decodebin ! videoconvert ! ximagesink</p>
<p>RECEIVE QRQ CW AUDIO from the "other" QRQ CW OP<br/> ***************************************************************<br/> gst-launch-1.0 -v udpsrc caps="application/x-rtp,channels=1" port=5008 ! rtpjitterbuffer latency=60 ! queue ! rtpopusdepay ! opusdec plc=true ! audioconvert ! jackaudiosink buffer-time=30000</p>
<p>gstreamer:<br/> <a href="https://gstreamer.freedesktop.org/">https://gstreamer.freedesktop.org/</a></p>
<p></p>
<p>OBITUARY:</p>
<p><a href="http://www.legacy.com/obituaries/neptune-society/obituary.aspx?n=William-Pletting&amp;lc=1964&amp;pid=185617185&amp;mid=7405710" target="_blank" rel="noopener">http://www.legacy.com/obituaries/neptune-society/obituary.aspx?n=William-Pletting&amp;lc=1964&amp;pid=185617185&amp;mid=7405710</a></p>Keying CW on the ELECRAFT K3S at 75 wpm and getting FULL QSK HF RECEIVE AUDIO between letterstag:qrqcwnet.ning.com,2018-11-02:1993813:BlogPost:352302018-11-02T18:31:29.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p>Here is a video demo'N an experimental setup to key an ELECRAFT K3S at 75 wpm(FULL FAST QSK) so you are able to hear background HF RECEIVE audio between letters </p>
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/u9KwKjok39U?wmode=opaque" width="560"></iframe>
</p>
<p>a test run using a setup using all LINUX FREE SOFTWARE to run REMOTE RIG OPERATIONS for QRQ CW at 75 wpm...trying to achieve good FULL QSK with RECEIVE HF AUDIO between letters at…</p>
<p>Here is a video demo'N an experimental setup to key an ELECRAFT K3S at 75 wpm(FULL FAST QSK) so you are able to hear background HF RECEIVE audio between letters </p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/u9KwKjok39U?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>a test run using a setup using all LINUX FREE SOFTWARE to run REMOTE RIG OPERATIONS for QRQ CW at 75 wpm...trying to achieve good FULL QSK with RECEIVE HF AUDIO between letters at this speed...</p>
<p>is the typical full qsk mode using the CW JACK and qrq+ setting on this Elecraft K3S....there is no RECEIVE HF AUDIO between letters at 75 wpm....however, using this software method to key the rig ...keying the PTT ahead of the arriving CW TONE ...sending CW using A2 MODE ...AFCW... Receive HF AUDIO can now be heard between letters...<br/>NOTE: (the k3s setting for PTT-RLS was set to ZERO in its config menu) using an audio derived PTT KEYING circuit<br/><a href="http://qrqcwnet.ning.com/forum/topics/what-circuit-for-computer">http://qrqcwnet.ning.com/forum/topics/what-circuit-for-computer</a></p>
<p>the PTT tone is sent first by the REMOTE OP's station to give the RIG time to close the PTT jack fully before the actual AFCW TONE arrives (audio OVER ip) then the actual CW AUDIO NOTE to be transmitted is sent...and goes into the RIG's TRANSMIT LINE INPUT jack and then out to RF etc</p>
<p>there are some interesting timing values that have to found experimentally....here are just a few..<br/>- how long it takes the RIG's PTT to close (12 ms on my rig)<br/>- how long over the local area network does it take for the TRANSMIT CW TONE to arrive at the RIG....the TONE has to be delayed 12 ms on this setup example to give the PTT TONE enough time to activate the PTT CIRCUIT and CLOSE IT all the way...getting the RIG ready to transmit any TRANSMIT AUDIO it hears on its LINE IN jack...</p>Don't let HF STATIC get in the way of your QRQ CW copy - use the NOISE-REPELLENT plugin to reduce or eliminate HF statictag:qrqcwnet.ning.com,2018-09-18:1993813:BlogPost:351372018-09-18T13:48:17.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/OmzDywD1cio?wmode=opaque" width="560"></iframe>
</p>
<p>brief LIVE demo on 40 meters RX - of using the Noise-repellent LV2 PLUGIN to lower(or even virtually eliminate) the HF Background audio static while listening to a CW SIGNAL<br></br>(this plugin works well on VOICE too)</p>
<p><br></br><a href="https://github.com/lucianodato/noise-repellent">https://github.com/lucianodato/noise-repellent…</a><br></br></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/OmzDywD1cio?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>brief LIVE demo on 40 meters RX - of using the Noise-repellent LV2 PLUGIN to lower(or even virtually eliminate) the HF Background audio static while listening to a CW SIGNAL<br/>(this plugin works well on VOICE too)</p>
<p><br/><a href="https://github.com/lucianodato/noise-repellent">https://github.com/lucianodato/noise-repellent</a><br/><a href="https://linuxmusicians.com/viewtopic.php?p=84459">https://linuxmusicians.com/viewtopic.php?p=84459</a><br/><a href="https://linuxmusicians.com/viewtopic.php?f=48&amp;t=18930">https://linuxmusicians.com/viewtopic.php?f=48&amp;t=18930</a></p>
<p></p>
<p>FROM THE DOCS on this plugin:</p>
<p>find a clear spot on the HF BAND of interest then: - Turn on "learn noise profile" for a bit...once that's done turn it off and tweak (the other) parameters (on the plugin) as you like.</p>
<p>Advice for better reduction<br/>-----<br/>General noise reduction advice<br/>* Try to reduce and not remove entirely the noise. It will sound better.<br/>* Gentler settings with multiple instance of the plug-in will probably sound better than too much reduction with one instance. Of course for every instance the noise should be re-learned again.<br/>* If the noise varies to much from one section to other apply different reduction for each part.<br/>* Always remember to listen to the residual signal to make sure that you are not distorting the signal too much.<br/>* Start with the reduction at 0 dB and then decrease it until you hear artifacts then tune the parameters to get rid of them without distorting the signal.<br/>* It might help using an spectrogram analysis to help you notice what you are doing. This can be easily done by using a-Inline Spectrogram in Ardour or the spectrogram view in audacity or sonic visualizer</p>
<p></p>
<p></p>Best Morse Code (CW) Apps for IOS / Android - article by KM6JUR - Steve Peron - on medium.comtag:qrqcwnet.ning.com,2018-08-23:1993813:BlogPost:350342018-08-23T10:42:58.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><a href="https://medium.com/@steve_peron/best-morse-code-cw-apps-for-ios-android-top-apps-c7cd445e73f5" target="_blank" rel="noopener">https://medium.com/@steve_peron/best-morse-code-cw-apps-for-ios-android-top-apps-c7cd445e73f5</a></p>
<p><a href="https://medium.com/@steve_peron/best-morse-code-cw-apps-for-ios-android-top-apps-c7cd445e73f5" target="_blank" rel="noopener">https://medium.com/@steve_peron/best-morse-code-cw-apps-for-ios-android-top-apps-c7cd445e73f5</a></p>Streaming QRQ CW practice files from FLdigi - using the OBS desktop broadcaster and the TWITCH STREAMING servicetag:qrqcwnet.ning.com,2018-08-15:1993813:BlogPost:349342018-08-15T21:20:53.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p>This video is a short demo of a first test trying to broadcast 5 FLdigi's sending at 5 different qrq speeds...where you can choose which FLdigi//speed you want to listen to - right from your browser listening to the TWITCH QRQcw CHANNEL.</p>
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/9bDrG6RPPDs?wmode=opaque" width="560"></iframe>
</p>
<p>a test to transmit and receive 5 individual channels of audio to AND from the TWITCH Streaming server -…</p>
<p>This video is a short demo of a first test trying to broadcast 5 FLdigi's sending at 5 different qrq speeds...where you can choose which FLdigi//speed you want to listen to - right from your browser listening to the TWITCH QRQcw CHANNEL.</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/9bDrG6RPPDs?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>a test to transmit and receive 5 individual channels of audio to AND from the TWITCH Streaming server - hear each stream individually from the browser listening to the TWITCH CHANNEL - using LINUX &amp; JackRouter with the Pulseaudio - jack module.</p>
<p>the audio source chosen is HIGH SPEED MORSE CODE AUDIO TONES transmitted from 5 individual FLdigi MODEMS</p>
<p><a href="https://obsproject.com/">https://obsproject.com/</a><br/><a href="https://www.twitch.tv/">https://www.twitch.tv/</a><br/><a href="http://www.w1hkj.com/">http://www.w1hkj.com/</a> for FLdigi</p>ATTENTION: all QRQcw OPs looking for an online qrq cw qso - we have a new iCW server devoted to QRQ CW operationstag:qrqcwnet.ning.com,2018-08-10:1993813:BlogPost:349312018-08-10T21:30:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p style="text-align: center;"><span style="font-size: 12pt;">iCW now has a new PRO MUMBLE SERVER dedicated for QSO'n QRQcw over the internet</span></p>
<p style="text-align: center;"><span style="font-size: 12pt;">It is located in Denver, Colorado</span></p>
<p style="text-align: center;"><span style="font-size: 12pt;">Please see this iCW website for more information: …</span></p>
<p style="text-align: center;"><span style="font-size: 12pt;">iCW now has a new PRO MUMBLE SERVER dedicated for QSO'n QRQcw over the internet</span></p>
<p style="text-align: center;"><span style="font-size: 12pt;">It is located in Denver, Colorado</span></p>
<p style="text-align: center;"><span style="font-size: 12pt;">Please see this iCW website for more information: <a href="https://sites.google.com/site/icwoip/" target="_blank" rel="noopener">https://sites.google.com/site/icwoip/</a></span></p>
<p></p>
<p><a href="http://api.ning.com:80/files/M8Ss5X0EB7Knrd37itBWsS1sZvWVAER56ELRXmLicLpYnzLR6UZSnyuJS8L1GKlvujfjVQ8O-ncpPiNHn9ZNh*oLnPX6OaUl/denverNFOserverCLIENT.png" target="_self"><img src="http://api.ning.com:80/files/M8Ss5X0EB7Knrd37itBWsS1sZvWVAER56ELRXmLicLpYnzLR6UZSnyuJS8L1GKlvujfjVQ8O-ncpPiNHn9ZNh*oLnPX6OaUl/denverNFOserverCLIENT.png" width="576" class="align-center"/></a></p>
<p></p>
<p>NOTE: the "NFO" QRQ MUMBLE server company that is being used has to this to say about the quality of their services: <a href="https://www.nfoservers.com/networklocations.php" target="_blank" rel="noopener">https://www.nfoservers.com/networklocations.php</a></p>
<p>"Most of our locations use pure INAP bandwidth. We chose INAP for its performance and reliability, and so have many other companies, including Microsoft, Alaska Airlines, Chase, Riot Games, and Sony. We buy directly from INAP, not through a reseller.</p>
<p>INAP gets its high performance by buying direct connections to many Tier 1 providers, such as Verizon, AT&amp;T, Sprint, GTT/tinet, Verio/NTT, CenturyLink, and Telia, and choosing the best path to reach clients through a proprietary system called MIRO (tm) (Managed Internet Route Optimizer). MIRO makes frequent, automatic routing adjustments based on characteristics including latency, packet loss, and route stability, and it provides much higher performance than standard BGP methods."</p>
<p></p>QRQ CW audio tones over Gstreamer's AUDIO PIPELINES - 16 bit audio VS 24 bit audio - does 24 bit audio make any difference for QRQcw COPY by ear ?tag:qrqcwnet.ning.com,2018-05-26:1993813:BlogPost:339902018-05-26T14:30:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/0qUtVGmbEY4?wmode=opaque" width="560"></iframe>
</p>
<p>brief test creating 2 Gstreamer AUDIO PIPELINE LOOPBACKS from a Linux Laptop TO a RASPBERRY PI 2b - over the LAN - going through routers and switches...(both using Jack Audio Connection Kit)<br></br> one PIPELINE using rtpL16*** <br></br> and the other PIPELINE using rtpL24***</p>
<p>to compare Gstreamer's rtpL16pay and rtpL24pay RTP AUDIO PAYLOADER…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/0qUtVGmbEY4?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>brief test creating 2 Gstreamer AUDIO PIPELINE LOOPBACKS from a Linux Laptop TO a RASPBERRY PI 2b - over the LAN - going through routers and switches...(both using Jack Audio Connection Kit)<br/> one PIPELINE using rtpL16*** <br/> and the other PIPELINE using rtpL24***</p>
<p>to compare Gstreamer's rtpL16pay and rtpL24pay RTP AUDIO PAYLOADER ENCODERs , for their inherent NOISE LEVELS before any audio is transmitted into the PIPELINE and then to see how well MORSE CODE AUDIO TONES are preserved(in how they look and sound compared to the original), after going through each of the Gstreamer Audio PIPELINES</p>
<p>RESULTS: there are some wide spectrum noise levels residing on the rtpL16pay PIPES that were not observed on the rtpL24pay PIPES, while viewing the SPECTRUM ANALYZER ; otherwise, the sound of the MORSE CODE AUDIO TONES were pretty close in audio fidelity and spectral bandwidth(above -60db) and shape between rtpL16 &amp; rtpL24</p>
<p></p>
<p>GSTREAMER COMMANDS USED:</p>
<p>RASPBERRY PI:<br/>********************************************************************<br/>gst-launch-1.0 -v jackaudiosrc client-name=TRANSMIT_rtpL24pay provide-clock=true do-timestamp=true ! audio/x-raw, channels=1,depth=24,width=24,rate=48000,payload=96 ! audioconvert ! rtpL24pay ! udpsink host=192.168.1.101 port=5001</p>
<p>gst-launch-1.0 udpsrc port=5002 ! "application/x-rtp,media=(string)audio, clock-rate=(int)48000, channels=1, payload=(int)96" ! rtpjitterbuffer latency=10 ! rtpL24depay ! audioconvert ! jackaudiosink client-name=RECEIVE_rtpL24depay buffer-time=30000</p>
<p>gst-launch-1.0 -v jackaudiosrc client-name=TRANSMIT_rtpL16pay provide-clock=true do-timestamp=true ! audio/x-raw, channels=1,depth=16,width=16,rate=48000,payload=96 ! audioconvert ! rtpL16pay ! udpsink host=192.168.1.101 port=5003</p>
<p>gst-launch-1.0 udpsrc port=5004 ! "application/x-rtp,media=(string)audio, clock-rate=(int)48000, channels=1, payload=(int)96" ! rtpjitterbuffer latency=10 ! rtpL16depay ! audioconvert ! jackaudiosink client-name=RECEIVE_rtpL16depay buffer-time=30000</p>
<p>LINUX LAPTOP:<br/>********************************************************************<br/>gst-launch-1.0 -v jackaudiosrc client-name=TRANSMIT_rtpL24pay provide-clock=true do-timestamp=true ! audio/x-raw, channels=1,depth=24,width=24,rate=48000,payload=96 ! audioconvert ! rtpL24pay ! udpsink host=192.168.1.130 port=5002</p>
<p>gst-launch-1.0 udpsrc port=5001 ! "application/x-rtp,media=(string)audio, clock-rate=(int)48000, channels=1, payload=(int)96" ! rtpjitterbuffer latency=10 ! rtpL24depay ! audioconvert ! jackaudiosink client-name=RECEIVE_rtpL24depay buffer-time=30000</p>
<p>gst-launch-1.0 -v jackaudiosrc client-name=TRANSMIT_rtpL16pay provide-clock=true do-timestamp=true ! audio/x-raw, channels=1,depth=16,width=16,rate=48000,payload=96 ! audioconvert ! rtpL16pay ! udpsink host=192.168.1.130 port=5004</p>
<p>gst-launch-1.0 udpsrc port=5003 ! "application/x-rtp,media=(string)audio, clock-rate=(int)48000, channels=1, payload=(int)96" ! rtpjitterbuffer latency=10 ! rtpL16depay ! audioconvert ! jackaudiosink client-name=RECEIVE_rtpL16depay buffer-time=30000</p>Created my iCW "Station"tag:qrqcwnet.ning.com,2018-05-23:1993813:BlogPost:337742018-05-23T03:07:16.000ZMark Tosiellohttp://qrqcwnet.ning.com/profile/MarkTosiello
<p>After bringing together EhoCW, VoiceMeeter Banana and Mumble, I built an interface for my paddles using the following:</p>
<p>1 - Sewell USB-Serial Adapter (I had this on hand, a similar one is available on Amazon)</p>
<p>1 - 3.5mm Stereo Female Terminal Block panel mount connector…</p>
<p></p>
<p>After bringing together EhoCW, VoiceMeeter Banana and Mumble, I built an interface for my paddles using the following:</p>
<p>1 - Sewell USB-Serial Adapter (I had this on hand, a similar one is available on Amazon)</p>
<p>1 - 3.5mm Stereo Female Terminal Block panel mount connector</p>
<p><a href="https://www.amazon.com/gp/product/B077XPSKQD/ref=oh_aui_detailpage_o03_s01?ie=UTF8&amp;psc=1">https://www.amazon.com/gp/product/B077XPSKQD/ref=oh_aui_detailpage_o03_s01?ie=UTF8&amp;psc=1</a></p>
<p></p>
<p> 1 - DE-9 (DB-9) RS232 Female Soccket Connector to Terminal Block</p>
<p><a href="https://www.amazon.com/gp/product/B075QB33VV/ref=oh_aui_detailpage_o03_s00?ie=UTF8&amp;psc=1">https://www.amazon.com/gp/product/B075QB33VV/ref=oh_aui_detailpage_o03_s00?ie=UTF8&amp;psc=1</a></p>
<p></p>
<p>Using the above it was trivial to create a patch cable for my various paddles. The connectors came in 2 packs, so I'm going to make one for my straight keys as well. Dit -&gt; tip (pin 6), Dah -&gt; Ring (pin 8) and Common -&gt; Sleeve (pin 4). For Straight keys, pin 4 and pin 6.</p>
<p>Working very well, loopback works well. Looks like I'm all set!</p>
<p>73 de Mark KD8EDC</p>Looks like TOM, W4BQF was right about switching to DVORAK for QRQ CW sending on a keyboard - 150 wpm typing exampletag:qrqcwnet.ning.com,2018-05-14:1993813:BlogPost:339852018-05-14T11:44:40.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p style="text-align: center;">TOM's article about his work with the DVORAK keyboard for QRQ CW TYPING</p>
<p style="text-align: center;"> <a href="https://www.eham.net/ehamforum/smf/index.php?topic=81139.10;wap2" rel="noopener" target="_blank">https://www.eham.net/ehamforum/smf/index.php?topic=81139.10;wap2</a></p>
<p><span style="font-size: 14pt;"><strong>HERE IS SOMEONE USING a DVORAK KEYBOARD to type 150 wpm…</strong></span></p>
<p></p>
<p style="text-align: center;">TOM's article about his work with the DVORAK keyboard for QRQ CW TYPING</p>
<p style="text-align: center;"> <a href="https://www.eham.net/ehamforum/smf/index.php?topic=81139.10;wap2" target="_blank" rel="noopener">https://www.eham.net/ehamforum/smf/index.php?topic=81139.10;wap2</a></p>
<p><span style="font-size: 14pt;"><strong>HERE IS SOMEONE USING a DVORAK KEYBOARD to type 150 wpm</strong></span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/69j8OIfYfY8?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>QRQ'n CW on HF remotely in the QTH with a LAPTOP to a RASPBERRY PI - advanced setup for CW Keyboard, Paddles, & Straight Keytag:qrqcwnet.ning.com,2018-04-20:1993813:BlogPost:339782018-04-20T16:34:23.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/yJeJpzgnAlQ?wmode=opaque" width="560"></iframe>
</p>
<p>this is an advanced setup for remote control of an ELECRAFT K3S over ip on the LOCAL AREA NETWORK - a LINUX LAPTOP to the Rig's Raspberry PI's computer</p>
<p>AUDIO OVER IP: over the local LAN with routers and switches :<br></br>zita-njbridge is used to provide audio for RECEIVE AND TRANSMIT…<br></br></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/yJeJpzgnAlQ?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>this is an advanced setup for remote control of an ELECRAFT K3S over ip on the LOCAL AREA NETWORK - a LINUX LAPTOP to the Rig's Raspberry PI's computer</p>
<p>AUDIO OVER IP: over the local LAN with routers and switches :<br/>zita-njbridge is used to provide audio for RECEIVE AND TRANSMIT<br/><a href="https://kokkinizita.linuxaudio.org/linuxaudio/">https://kokkinizita.linuxaudio.org/linuxaudio/</a></p>
<p>ACTIVATING THE RIG's PTT with a 45 hertz SUB TONE:<br/> before the CW AUDIO TONES arrive<br/>using two GATES, the first gate(calf gate) sets an exact time for the SUB TONE to be "ON" ...then the output of the 1st gate activates a 2nd GATE(ZamGate) to shape the 45 hz SUB TONE with a very well shaped raised cosine edge, to prevent any harmonics or spurious, additional frequencies from getting to the RIG...so only a very pure 45 hertz tone reaches the RIG's LINE INPUT <br/><a href="https://calf-studio-gear.org/">https://calf-studio-gear.org/</a><br/><a href="http://www.zamaudio.com/">http://www.zamaudio.com/</a></p>
<p>for this to work well, you have to experiment with the timings of the arriving CW AUDIO TONES to the RIG...using a LINEAR DELAY LINE<br/><a href="http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html#tth_sEc2.29">http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html#tth_sEc2.29</a><br/>and adjust the CALF GATE RELEASE so that there are no CW audio glitches..which usually has to be done experimentally</p>
<p>BLOCKING the delayed RIG's sidetone monitor audio so that you only hear the local sidetone from your paddles, straight key etc...<br/>DUCKA<br/><a href="http://openavproductions.com/doc/artyfx.html#ducka">http://openavproductions.com/doc/artyfx.html#ducka</a><br/>NOTE: there is too much delay if you wait for the RIG's sidetone...so you monitor the paddles and any other morse code instrument locally in very low latency and BLOCK out the rig's sidetone</p>
<p>for the CW KEYBOARD, if you can tolerate @ 100 ms of delay from typing the letters until hearing the cw keyboard's sidetone, you won't have to worry about monitoring the CW KEYBOARD sidetone locally and can wait for the RIG's sidetone to reach your remote station</p>
<p><br/>FLRIG to adjust the RIG's CONTROLS over ip:<br/><a href="http://www.w1hkj.com/flrig-help/">http://www.w1hkj.com/flrig-help/</a></p>
<p>the REMOTE CW OP is using a LINUX LAPTOP with Lubuntu 16.04 - <br/>using the KXstudio JACK APPS and with all the KXstudio LV2 plugins installed and available for use...<br/><a href="http://kxstudio.linuxaudio.org/">http://kxstudio.linuxaudio.org/</a><br/><a href="https://github.com/brummer10/jalv_select">https://github.com/brummer10/jalv_select</a></p>QRQ CW in AFCW mode - test transmit 1 watt and observe audio quality and spectrum purity on webSDRtag:qrqcwnet.ning.com,2018-04-18:1993813:BlogPost:339752018-04-18T14:25:28.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/CfhYgyR8jpU?wmode=opaque" width="560"></iframe>
</p>
<p>short test by transmitting CW at 1 watt on 10 meters - going to a websdr rcvr to listen and record the sound - look for how well using AFCW MODE on an ELECRAFT K3S performs for its spectral purity and waveform preservation of a well constructed raised cosine edged CW NOTE made by the ZamGate CW RE-Keyer - transmitted by an Elecraft K3S using a…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/CfhYgyR8jpU?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>short test by transmitting CW at 1 watt on 10 meters - going to a websdr rcvr to listen and record the sound - look for how well using AFCW MODE on an ELECRAFT K3S performs for its spectral purity and waveform preservation of a well constructed raised cosine edged CW NOTE made by the ZamGate CW RE-Keyer - transmitted by an Elecraft K3S using a remote laptop sending the CW TONE transmit audio to the rig over ip on the local area network, going through routers and switches</p>
<p>RESULTS:<br/>everything looks and sounds pretty good...<br/>CW wave form remained intact...no distortion, no spurious signals...no audio glitches from the remote laptop sending the transmit cw audio tones over ip on the LAN to the K3S raspberry PI USB SOUND CARD interface using (ZITA-NJbridge "audio OVER ip" APP - <a href="https://kokkinizita.linuxaudio.org/linuxaudio/">https://kokkinizita.linuxaudio.org/linuxaudio/</a></p>
<p>FLdigi's RT QSK CONTROL PORT, was used to "key" the ZamGate CW RE-Keyer...the ZamGate CW RE-Keyer creates a new CW NOTE with the exact timing as the original FLdigi cw note, ZamGate CW RE-KEYER creates its own raised cosine edges and also includes post HP and LP filtering to create a purer spectrum audio cw output than would otherwise be possible by just depending on the RISE &amp; FALL time of 7 to 8 ms that the K3S RIG itself is capable of....</p>
<p>The K3S's own USB SOUND CARD is listening on its USB SOUND CARD LINE INPUT port for any audio to transmit on UPPER SIDE BAND...that CW AUDIO is provided by the RASPBERRY PI USB interface where the PI's ZITA-NJBridge APP, pipes in the audio from the remote laptop over ip, to the K3S USB SOUND CARD LINE INPUT</p>QRQ CW over 100 wpm - 121 wpm copy test - 700 hertz tone VERSES 821 hertz tone - which is better ?tag:qrqcwnet.ning.com,2018-04-13:1993813:BlogPost:337682018-04-13T12:36:37.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/j0SOq7bQVL0?wmode=opaque" width="560"></iframe>
</p>
<p></p>
<p>brief demo of having 2 FLdigi(s) sending the same text file at 121 wpm...one FLdigi sending at the pitch of 821 hertz, the other sending at 700 hertz</p>
<p>there are a few QRQ CW OPS that can copy over 100 wpm that have reported in over the past years, stating that they prefer a higher CW PITCH when copying CW above 100 wpm...this short…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/j0SOq7bQVL0?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p></p>
<p>brief demo of having 2 FLdigi(s) sending the same text file at 121 wpm...one FLdigi sending at the pitch of 821 hertz, the other sending at 700 hertz</p>
<p>there are a few QRQ CW OPS that can copy over 100 wpm that have reported in over the past years, stating that they prefer a higher CW PITCH when copying CW above 100 wpm...this short video demo, is given to test that concept...and see if other CW OPs that can copy above 100, would also agree, that it is slightly easier to copy cw over 100 wpm by ear, with a higher pitch than 700 hertz</p>
<p></p>
<p></p>Using FLdigi to adjust TRIGGER MIDI MONO for perfect QRQ CW AUDIO input to QRQ CW MIDI NOTE DATA output - at 200 wpmtag:qrqcwnet.ning.com,2018-04-11:1993813:BlogPost:338842018-04-11T13:30:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/uaCXoaLPiaU?wmode=opaque" width="560"></iframe>
</p>
<p></p>
<p>*********************************************************************<br></br> ADJUSTING TRIGGER MIDI MONO for extremely accurate AUDIO VOLUME input to CW MIDI DATA NOTE output conversion<br></br> *********************************************************************<br></br>
FLdigi will transmit a dit at 200 wpm(1khz [green]square wave using FLdigi's…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/uaCXoaLPiaU?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p>*********************************************************************<br/> ADJUSTING TRIGGER MIDI MONO for extremely accurate AUDIO VOLUME input to CW MIDI DATA NOTE output conversion<br/>
*********************************************************************<br/>
FLdigi will transmit a dit at 200 wpm(1khz [green]square wave using FLdigi's RT QSK control), which should be 6ms in length...the TRIGGER MIDI MONO settings will be adjusted to match FLdigi's 6ms dit length, with its own CW MIDI OUTPUT data - instructing another sine wave synthesizer[red] by its CW MIDI DATA to produce a CW NOTE audio OUTPUT of a 6 ms CW DIT on any synthesizer that has midi input ports</p>
<p>TRIGGER MIDI MONO works by converting the FLdigi cw note volume, which TRIGGERs a CW MIDI NOTE output, CW MIDI DATA - for NOTE ON, and NOTE OFF - with the same timing of each original CW ELEMENT's length that was transmitted to TRIGGER MIDI MONO's input audio port ...The CW MIDI DATA output is used to "key" first, a SIMPLE SINE GENERATOR[red], to see how well TRIGGER MIDI MONO output can perfectly match the same length in cw element timing from the original FLdigi CW NOTE input...which should be a 6ms dit at 200 wpm speed</p>
<p>the settings you see on TRIGGER MIDI MONO seem to be the best - to perform a consistant perfect match in timing of the 200 wpm dit CW ELEMENT length timing - each SIMPLE SINE GENERATOR dit is exactly matching the orignal FLdigi CW ELEMENT LENGTH</p>
<p>TRIGGER MIDI MONO's features will allow a very poor quality sidetone to be converted to a beautiful raised cosine wave form by using TRIGGER MIDI MONO's CW MIDI DATA OUTPUT port, to key a 2nd sine wave shaped synthesizer(MIDICW) as will be demonstrated by attaching a 555 timer chip's harsh square wave audio output over to the laptop's MIC JACK sound card input, and having TRIGGER MIDI MONO convert that harsh square wave into a perfectly sine shaped cw note output from the MIDICW plugin(many other sine wave synthesizers could be used too)<br/> NOTE: MIDICW requires a MIDI NOTE of "60" to work<br/>
NOTE: for accuracy using other sidetones besides FLdigi, for CW AUDIO VOLUME INPUT to CW MIDI NOTE OUTPUT, the volume &amp; pitch at the TRIGGER MIDI MONO's audio input port must be exactly the same as used when testing FLdigi's RT QSK port...since TRIGGER MIDI MONO works by using the "VOLUME" level of the incoming audio at its audio input port - to "trigger" a MIDI NOTE output - matching the timing of each of the original CW ELEMENTs<br/>
*******************************************************************</p>
<p>MIDICW &amp; Trigger Midi Mono links:</p>
<p><a href="https://youtu.be/Dj2cGM1S3eU">https://youtu.be/Dj2cGM1S3eU</a><br/> <a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a><br/>
<a href="http://lsp-plug.in/?page=manuals&amp;section=trigger_midi_mono">http://lsp-plug.in/?page=manuals&amp;section=trigger_midi_mono</a><br/>
<a href="https://sourceforge.net/projects/lsp-plugins/files/v1.0.26/">https://sourceforge.net/projects/lsp-plugins/files/v1.0.26/</a><br/>
<a href="http://qrqcwnet.ning.com/profiles/blogs/using-the-linux-lv2-plugin-trigger-midi-mono-as-a-morse-code-prac">http://qrqcwnet.ning.com/profiles/blogs/using-the-linux-lv2-plugin-trigger-midi-mono-as-a-morse-code-prac</a></p>QRQ Morse Code Audio over Mumble Voip - low bit rate(8k) experiment using the ZamGate CW RE-Keyertag:qrqcwnet.ning.com,2018-03-19:1993813:BlogPost:338792018-03-19T13:44:07.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/2WJ4ymhyH00?wmode=opaque" width="560"></iframe>
</p>
<p>this is a follow up to the first video about this topic:<br></br><a href="https://youtu.be/BgVdf55w13M" rel="noopener" target="_blank">https://youtu.be/BgVdf55w13M</a></p>
<p>to see how well this RE-KEYING SOFTWARE SYSTEM could RE-KEY low bit rate qrq cw audio over MUMBLE VOIP at 60 wpm</p>
<p>FROM 1st Video on this topic:</p>
<p>low bit rate…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/2WJ4ymhyH00?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>this is a follow up to the first video about this topic:<br/><a href="https://youtu.be/BgVdf55w13M" target="_blank" rel="noopener">https://youtu.be/BgVdf55w13M</a></p>
<p>to see how well this RE-KEYING SOFTWARE SYSTEM could RE-KEY low bit rate qrq cw audio over MUMBLE VOIP at 60 wpm</p>
<p>FROM 1st Video on this topic:</p>
<p>low bit rate experiment to see if the morse code audio tones that were being transmitted over Mumble on the iCW server, could be recovered from the CW OP transmitting with an 8k bit rate Mumble OPUS CODEC setting using the ZamGate CW RE-KEYER software APPs</p>
<p>*******************************************************************<br/> the GREEN wave on top, is the original Morse Code "audio over mumble" with the mumble bit rate set to its lowest possible value = 8000</p>
<p>the RED WAVE is the "Q multiplier" circuit's waveform - used to extract as much as possible of the original 700 hertz tone from the CW OP transmitting CW AUDIO TONES over Mumble at the MUMBLE / OPUS CODEC = 8k bitrate</p>
<p>The blue wave is the output of the first ZamGate RE-KEYER at 1000 hertz used to provide a stable square wave keying input for the 2nd ZamGate RE-KEYER</p>
<p>The Pink Wave is the 2nd ZamGate CW RE-Keyer audio Morse Code Note output at 700 hertz</p>
<p>SLIDER TO THE LEFT= Original 8k bit cw audio tones over Mumble<br/>SLIDER TO THE RIGHT= the 2nd ZamGate CW-RE-KEYER cw audio tone output</p>
<p>for more info on Morse Code Audio over Mumble - iCW see here:<br/><a href="https://sites.google.com/site/icwoip/">https://sites.google.com/site/icwoip/</a></p>how to STOP your HAM RADIO RIG from sending CW NOTE edge noise harmonic spurs during TRANSMITtag:qrqcwnet.ning.com,2018-03-02:1993813:BlogPost:339592018-03-02T17:22:18.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/ppYBCYRwpwc?wmode=opaque" width="560"></iframe>
</p>
<p>the typical modern RIG, usually shapes its CW TRANSMIT waveform as a raised cosine edged cw note with a Rise and Fall time between 5 and 10 milliseconds....For this test a 7ms rise and fall time of a perfect raised cosine cw note created by FLdigi is used to represent the "modern rigs" and tested against another software CW KEYER called the…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/ppYBCYRwpwc?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>the typical modern RIG, usually shapes its CW TRANSMIT waveform as a raised cosine edged cw note with a Rise and Fall time between 5 and 10 milliseconds....For this test a 7ms rise and fall time of a perfect raised cosine cw note created by FLdigi is used to represent the "modern rigs" and tested against another software CW KEYER called the ZamGate CW KEYER. <a href="https://youtu.be/zO6oFOZ5lVA">https://youtu.be/zO6oFOZ5lVA</a><br/> The ZamGate CW Keyer has its own HP-LP filter included to filter out all of the edge noise and thus prevents harmonic spurs from being transmitted out on the air... the typical edge noise that gets generated on most every rig's cw notes...</p>
<p>NOTE: even with a very large rise and fall time such as 7ms, the leading edge noise rise time harmonic spurs are significant, and will be transmitted along with the main CW NOTE's pitch. This edge noise gets louder the faster the CW SPEED becomes...the edge noise can get so loud at the higher QRQ CW speeds, that the CW EDGE generated noise is almost as loud as the actual CW TONE you are trying to copy...</p>Remote Rig Audio over ip - using Zita-NJbridge - "16 bit" verses "24 bit" audio streaming - test and compare audio stream quality between bit ratestag:qrqcwnet.ning.com,2018-03-02:1993813:BlogPost:339572018-03-02T15:00:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p>Brief test to see how well the <a href="http://kokkinizita.linuxaudio.org/linuxaudio/" rel="noopener" target="_blank">ZITA-NJbridge</a> software would do at streaming high quality, extreme QRQ CW, high speed Morse Code audio tones over the LOCAL AREA NETWORK(LAN)(audio OVER ip). 2 tests were done, one using a "16 bit" digital audio PCM ZITA-stream and another test using a "24 bit" digital audio PCM ZITA-stream. The ZITA-PCM 24 bit audio stream won the contest by a wide margin, and…</p>
<p>Brief test to see how well the <a href="http://kokkinizita.linuxaudio.org/linuxaudio/" target="_blank" rel="noopener">ZITA-NJbridge</a> software would do at streaming high quality, extreme QRQ CW, high speed Morse Code audio tones over the LOCAL AREA NETWORK(LAN)(audio OVER ip). 2 tests were done, one using a "16 bit" digital audio PCM ZITA-stream and another test using a "24 bit" digital audio PCM ZITA-stream. The ZITA-PCM 24 bit audio stream won the contest by a wide margin, and preserved perfectly, the pure audio spectrum of the original Morse Code audio Spectrum as observed on an Audio Spectrum Analysis software APP called <a href="https://www.vb-audio.com/Spectralissime/index.htm" target="_blank" rel="noopener">Spectralissime</a>.</p>
<p></p>
<p>Here is the SPEC AN READOUT of the <a href="http://manpages.ubuntu.com/manpages/xenial/man1/zita-njbridge.1.html" target="_blank" rel="noopener">Zita-NJbridge</a> in 16 bit PCM audio streaming mode, with the original spectrum on the left and the "streamed" audio after going through the ZITA audio OVER ip TUNNEL - on the RIGHT :</p>
<p><a href="http://api.ning.com:80/files/*PNWhW-YzET6ieo1HS3qvp*kpeQSbcpqLmpY-H8pA35*dUEFv-yua7B1NI*h1zcuT8GMUWygH6*8ruHK5CuowQ3vugag7cvs/SPECanZITAnjbridge.png" target="_self"><img src="http://api.ning.com:80/files/*PNWhW-YzET6ieo1HS3qvp*kpeQSbcpqLmpY-H8pA35*dUEFv-yua7B1NI*h1zcuT8GMUWygH6*8ruHK5CuowQ3vugag7cvs/SPECanZITAnjbridge.png?width=750" width="750" class="align-left"/></a></p>
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<p>and here are the 24 bit ZITA audio OVER ip streaming results... LEFT is original, RIGHT is the 24 bit ZITA-streamed </p>
<p><a href="http://api.ning.com:80/files/*PNWhW-YzES8VryAlNckoASIdCHSG34tZsmpgACXdkCN5pid3kcHlqwtYnjy7lH3F4KhXIG1pqKdfAi4n5NcD54HC15XDzrc/SPECanZITAnjbridge_24BIT.png" target="_self"><img src="http://api.ning.com:80/files/*PNWhW-YzES8VryAlNckoASIdCHSG34tZsmpgACXdkCN5pid3kcHlqwtYnjy7lH3F4KhXIG1pqKdfAi4n5NcD54HC15XDzrc/SPECanZITAnjbridge_24BIT.png?width=750" width="750" class="align-left"/></a></p>
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<p style="text-align: center;"><span style="font-size: 10pt;"><em><strong>As you can see, the 24 bit stream preserves the original SPECTRUM of the QRQ CW tones the best</strong></em></span></p>
<p></p>
<p style="text-align: center;">here are the two commands used on the TRANSMITTER STATION</p>
<p style="text-align: center;"><span style="font-size: 12pt;">16 bit</span> - <strong>"zita-j2n --chan 1 --16bit 192.168.1.101 5001"</strong></p>
<p style="text-align: center;">here is the command for 24bit (24 bit is default and you don't have to add any extra commands)</p>
<p style="text-align: center;"><span style="font-size: 12pt;">24 bit</span> - <strong>"zita-j2n --chan 1 192.168.1.101 5001"</strong></p>
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<p>NOTE: FLdigi was set to transmit on its QSK mode - RT channel audio output - a 1khz square wave tone - continuously sending the letter "S" at 200 wpm(to create the most possible edge noise)...this FLdigi "keying" signal, was then used to KEY a different software CPO called the <a href="https://youtu.be/hUZT_xsojEg" target="_blank" rel="noopener">ZamGate CW KEYER</a>. The ZamGate CW KEYER has a very pure audio spectrum output when keyed at QRQcw; as you can see from the original SPEC AN pictures shown above(left side of both pics)</p>
<p></p>
<p>Just to compare how well the ZITA-NJBRIDGE does at preserving the original QRQcw Morse Code Audio Spectrum, here are a couple more examples of tests that were also run...both of the AOIP programs, shown below, still fall short of the excellence of the 24 bit Zita-njbridge PCM AUDIO Stream</p>
<p></p>
<p>Here are the <a href="https://ccrma.stanford.edu/software/jacktrip/" target="_blank" rel="noopener">JACKTRIP</a> test results, a similar program to Zita(streaming raw audio PCM DATA over ip), original Morse Code Audio Spectrum on the LEFT, and the <a href="https://ccrma.stanford.edu/groups/soundwire/software/jacktrip/" target="_blank" rel="noopener">JACKTRIP</a> audio spectrum on the RIGHT</p>
<p><a href="http://api.ning.com:80/files/*PNWhW-YzETMzkfWLU*0X78BDocYOrVEXRuvM1aSQyLaQaZZh-5pWchbOuy-GSqaLHRAcwolucfXtpGdjDcMLhMPS8qyOxb1/specJACKTRIP.png" target="_self"><img src="http://api.ning.com:80/files/*PNWhW-YzETMzkfWLU*0X78BDocYOrVEXRuvM1aSQyLaQaZZh-5pWchbOuy-GSqaLHRAcwolucfXtpGdjDcMLhMPS8qyOxb1/specJACKTRIP.png?width=750" width="750" class="align-left"/></a></p>
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<p>Here is yet another similar program called <a href="https://gstreamer.freedesktop.org/" target="_blank" rel="noopener">Gstreamer</a>(which is using OPUS CODEC compression at 128k bit rate 48k sample rate)....the original on the LEFT, the <a href="https://en.wikipedia.org/wiki/GStreamer" target="_blank" rel="noopener">Gstreamer</a>(OPUS) SPECTRUM READOUT on the right:</p>
<p><a href="http://api.ning.com:80/files/*PNWhW-YzERUcK0Q50s2212ywP4ToKTq7w4Wj2gwZFb7KEoteb4-kxDu91ocCUbP6SS4e*IauytilMSVn-oli-zz0YDz1UE9/specGSTREAERMer.png" target="_self"><img src="http://api.ning.com:80/files/*PNWhW-YzERUcK0Q50s2212ywP4ToKTq7w4Wj2gwZFb7KEoteb4-kxDu91ocCUbP6SS4e*IauytilMSVn-oli-zz0YDz1UE9/specGSTREAERMer.png?width=750" width="750" class="align-left"/></a></p>
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<p></p>Internet access struggletag:qrqcwnet.ning.com,2018-02-17:1993813:BlogPost:340522018-02-17T17:57:29.000ZSteve Steltzerhttp://qrqcwnet.ning.com/profile/SteveSteltzer
<p>It's been a long hard road but I finally have net access good enough to do iCW. I live in a very rural area in the middle of about 60k acres of woods. Satellite internet just doesn't make it for iCW. Finally got a cell booster and found out 750 MHZ RF does NOT like trees. The system came with a 4 element yagi. Tried several different spots, not consistent enough. Now I've got an 8 element up around 70 ft. in a tree that has a somewhat clearer shot to the tower and it's working reasonably…</p>
<p>It's been a long hard road but I finally have net access good enough to do iCW. I live in a very rural area in the middle of about 60k acres of woods. Satellite internet just doesn't make it for iCW. Finally got a cell booster and found out 750 MHZ RF does NOT like trees. The system came with a 4 element yagi. Tried several different spots, not consistent enough. Now I've got an 8 element up around 70 ft. in a tree that has a somewhat clearer shot to the tower and it's working reasonably well. Not perfect, unfortunately, but no worse than most band conditions. </p>The Calf-Studio Software Morse Code CW KEYER - brief demo using Straight Key, Paddles & CW Keyboardtag:qrqcwnet.ning.com,2018-02-14:1993813:BlogPost:340492018-02-14T16:26:36.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/Kh2zkYfkhlk?wmode=opaque" width="560"></iframe>
</p>
<p>using the free LV2 apps from:<br></br><a href="https://calf-studio-gear.org/">https://calf-studio-gear.org/</a></p>
<p>a software CW KEYER is constructed by chaining the apps together in an array that does the following...</p>
<p>1. a sidetone from the internal or external ports is routed first to the CALF EQUALIZER 5 BAND LV2 PLUGIN where the 1khz…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/Kh2zkYfkhlk?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>using the free LV2 apps from:<br/><a href="https://calf-studio-gear.org/">https://calf-studio-gear.org/</a></p>
<p>a software CW KEYER is constructed by chaining the apps together in an array that does the following...</p>
<p>1. a sidetone from the internal or external ports is routed first to the CALF EQUALIZER 5 BAND LV2 PLUGIN where the 1khz sidetone from the K1EL, the HEATHKIT CPO, or the YPLog audio output is filtered as shown on the video to create a 1khz bandpass/peak filter...this allows you to use any kind of sidetone, even a rough raspy sidetone,(like the output from the K40 cw keyer or the HEATHKIT CPO, so you can use a sidetone from any source, and the CALF STUDIO CW KEYER system will only use that "not so wonderful" keyer sidetone, even the worst ROUGH RASPY SIDETONE, to "key" the CALF-STUDIO software CW KEYER setup...</p>
<p>2. from the output of the CALF EQUALIZER 5 BAND the sidetone is routed to the 2nd channel input of the CALF GATE....on the first channel input of the CALF GATE is a PURE SINE WAVE GENERATOR that is always ON at a specific volume....the CALF GATE holds it back though, until the GATE is triggered by a sidetone on the CALF GATE INPUT PORT 2 channel...the GATE settings, setup as shown, allow for a very accurate "CLONE" of the original sidetone element length from the ST KEY, the PADDLES, the k1el K40 KB or the YPLog cw keyboard...once triggered, the GATE will pass the pure wave tone that is already waiting on CHANNEL ONE....through the channel one gate to its output...then...that "channel 1" pure sine wave audio will pass through 3 CALF FILTERS.... HIGH PASS, LOW PASS, and finally the CALF BANDPASS filter...this puts a very well constructed "edge" on the rise and fall time of the PURE WAVE TONE after it leaves the CALF GATE(NOTE: out of the GATE - the pure sine wave tone has zero rise/fall time with key clicks on it...so the CALF FILTERS take out all the edge noise and produce a smooth rise and fall time on the note)... you may observe on the SCOPE &amp; the SPEC AN, the final CW NOTE is very clean and sounds like what you would normally hear from a raised cosine cw note with about 8 ms of rise/fall time on it.... the CALF-STUDIO software CW KEYER can be adjusted to your preference for PITCH, WEIGHT, VOLUME, harder or software keying...by adjusting the settings on the CALF-STUDIO APPs</p>The ZamGate high performance, software CW KEYER - demo at 90 wpmtag:qrqcwnet.ning.com,2018-02-12:1993813:BlogPost:338592018-02-12T23:18:27.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p></p>
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/hUZT_xsojEg?wmode=opaque" width="560"></iframe>
</p>
<p>this video briefly shows how the ZamGate CW Keyer produces excellent CW AUDIO TONES that are precisely and accurately timed, from a CW TONE audio signal input at the ZamGate input "SIDECHAIN" port....in this case, the audio signal connecting to the ZamGate SIDECHAIN INPUT PORT is the rough, harsh audio output tone of YPLog(set to output a…</p>
<p></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/hUZT_xsojEg?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>this video briefly shows how the ZamGate CW Keyer produces excellent CW AUDIO TONES that are precisely and accurately timed, from a CW TONE audio signal input at the ZamGate input "SIDECHAIN" port....in this case, the audio signal connecting to the ZamGate SIDECHAIN INPUT PORT is the rough, harsh audio output tone of YPLog(set to output a 5khz tone at zero rise/fall time)</p>
<p>ZamGate takes the audio output of YPLog and uses it to "key" its own internal pure sine wave, raised cosine shaped cw audio element...you can make a perfect clone of the original cw element length or add or subtract time to it using the ZamGate controls(THRESHOLD)...you can adjust the rise and fall time of the cw note(attack &amp; release) for hard or soft keying....you can adjust the high pass and low pass audio filters to reduce the cw element edge noise as much as you like... you can adjust the volume level of the ZamGate output CW tone and its CW pitch...(video is using 700 hertz)</p>
<p>a pure sine wave tone generator provides the "base" for the ZamGate CW KEYER on ZamGate's channel 1 input, the ZamGate Attack &amp; Release controls adjust the rise and and fall times for the ZamGate output CW audio tone...the ZamGate Threshold adjusts the CW NOTE weight by time - for harder or software keying - as to your preference... ZamGate otherwise is a typical GATE plugin...where the signal on channel one is held back until the ZamGate threshold is triggered by a "set" amount of volume at its SIDECHAIN INPUT...once triggered the ZamGate will pass the audio through channel 1 and shape it according to the other controls of ZamGate as mentioned above...and keep passing the audio for as long as the original CW NOTE from YPLog(plus or minus according to the ZamGate THRESHOLD setting)</p>
<p>see here for more info on the ZamGate CW Keyer:<br/><a href="https://youtu.be/-uHSFcWW-qg">https://youtu.be/-uHSFcWW-qg</a><br/><a href="https://youtu.be/31p_XLw5Tq0">https://youtu.be/31p_XLw5Tq0</a></p>Build your own "keyable" Morse Code Practice Oscillator using the free VCV RACK Modular Synthesizertag:qrqcwnet.ning.com,2018-02-12:1993813:BlogPost:339422018-02-12T17:17:34.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/YY5mIQAqR1Q?wmode=opaque" width="560"></iframe>
</p>
<p>short demo of using the free open source modular synthesizer program - VCV RACK - to build your own software "keyable" Morse Code Practice Oscillator</p>
<p>the plugins shown used, are some of the basic default plugins that install with the VCV RACK program....the Morse Code CPO setup uses a typical basic framework to make a midi keyed…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/YY5mIQAqR1Q?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>short demo of using the free open source modular synthesizer program - VCV RACK - to build your own software "keyable" Morse Code Practice Oscillator</p>
<p>the plugins shown used, are some of the basic default plugins that install with the VCV RACK program....the Morse Code CPO setup uses a typical basic framework to make a midi keyed synthesizer....</p>
<p>1. MIDI INPUT (MIDI to CV)<br/>2. VOLTAGE CONTROLLED OSCILLATOR (VCO-1)<br/>3. ADSR (set the rise time and fall time and CW waveshape)<br/>4. VCA (use LINEAR or EXPONENTIAL keying CW element edges)<br/>5. Audio Interface - for managing audio output ports</p>
<p>some more info on VCV RACK modular synth'N:<br/><a href="https://vcvrack.com/">https://vcvrack.com/</a><br/><a href="https://github.com/VCVRack/Rack">https://github.com/VCVRack/Rack</a><br/><a href="http://www.factmag.com/2017/09/12/vcv-rack-open-source-virtual-modular-synth/">http://www.factmag.com/2017/09/12/vcv-rack-open-source-virtual-modular-synth/</a><br/><a href="https://reaperblog.net/2017/12/vcvrack_intro/">https://reaperblog.net/2017/12/vcvrack_intro/</a></p>VB-AUDIO's Spectralissime Spectrum Analyzer on Linux - demo using FLdigi's CW wave shaping controlstag:qrqcwnet.ning.com,2018-02-03:1993813:BlogPost:337352018-02-03T16:09:45.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p>VB-AUDIO's Spectralissime is working perfectly on LINUX LUBUNTU 16.04 using W.I.N.E and the WINEasio driver for JackRouter. This is a windows program and this demo would also apply to a windows install of this excellent software audio spectrum analyzer. This video below, is a brief demo showing the spectrum readout of FLdigi sending cw at 40 wpm and varying the rise/fall time and toggling on &amp; off - FLdigi's own unique and powerful CW bandpass filter…</p>
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<p>VB-AUDIO's Spectralissime is working perfectly on LINUX LUBUNTU 16.04 using W.I.N.E and the WINEasio driver for JackRouter. This is a windows program and this demo would also apply to a windows install of this excellent software audio spectrum analyzer. This video below, is a brief demo showing the spectrum readout of FLdigi sending cw at 40 wpm and varying the rise/fall time and toggling on &amp; off - FLdigi's own unique and powerful CW bandpass filter</p>
<p><a href="https://www.vb-audio.com/Spectralissime/index.htm" target="_blank" rel="noopener">https://www.vb-audio.com/Spectralissime/index.htm</a><iframe width="560" height="315" src="https://www.youtube.com/embed/Hdb7Rrs0TMI?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>QRQ CW over 100 wpm - tips, techniques and specialized QRQcw GEARtag:qrqcwnet.ning.com,2018-01-04:1993813:BlogPost:340222018-01-04T18:44:49.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/FPDp-matUxU?wmode=opaque" width="560"></iframe>
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<p>This video is demo’N a setup to create a custom QRQ CW sine wave, raised cosine edged, ‘keyable’ oscillator</p>
<p>There are already 2 excellent programs for LINUX for a software QRQ CW KEYBOARD… FLdigi and TWQRQ...however, neither one of them are ‘keyable’ - this first video in a new video series on “QRQ CW OVER 100 WPM” uses Fldigi as a tool to…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/FPDp-matUxU?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>This video is demo’N a setup to create a custom QRQ CW sine wave, raised cosine edged, ‘keyable’ oscillator</p>
<p>There are already 2 excellent programs for LINUX for a software QRQ CW KEYBOARD… FLdigi and TWQRQ...however, neither one of them are ‘keyable’ - this first video in a new video series on “QRQ CW OVER 100 WPM” uses Fldigi as a tool to build a new software QRQ CW pure sine wave, raised cosine edged, ‘keyable’ oscillator...that you can adjust weight both by TIME and by PERCENTAGE…you can also choose the raised cosine ‘window’, adjust pitch, volume, Q, bandwidth etc… NOTE: at QRQ CW over 100 wpm, many of the cw element parameters become critical for good copy… for example, the edge noise, in spite of the cw element having an 8 ms rise and fall time, increases with cw speed and must be reduced...the edge noise can get so loud as to be 50 percent of what you hear… the VSTs filter it out very well...<br/> <br/>NOTE: headphones might be needed in order to hear the subtle cw edge changes <br/>NOTE: only one speaker output is used for the video, to prevent 2 speaker phase issues while listening....you can use a STEREO to MONO adapter if you need to hear this video on both speakers..</p>
<p>first a 1000 hertz tone from Fldigi’s RT QSK CONTROL RT CHANNEL audio output goes to the input of the VST HOST’s first VST PLUGIN, a bandpass filter...which is centered at 1000 hertz...the volume of its output is CRITICAL to get the weight by TIME to work in the following plugins… [ - 1.74 db in this setup ]</p>
<p>the bandpass filter connects to the first REAGATE VST Plugin, where again the threshold volume(-.2 db) is critical to get the weight by TIME to work on the next plugin...another REAGATE…</p>
<p>the 2nd REAGATE PLUGIN is used for adjusting the WEIGHT BY TIME on the CW NOTE...the threshold slider in the middle is set to clone Fldigi’s weight and if you raise the threshold slider higher...you get lighter keying...if you lower the threshold slider you get heavier keying…</p>
<p>the next VST PLUGIN is called “sineCW” and is the heart of the system...where the 1000 hertz tone is used to create a new “cloned” cw element..sineCW lets you adjust the CW PITCH, VOLUME, bandpass filter bandwidth and Q, and rise/fall time</p>
<p>the final vst plugin is called the ENGINEERs FILTER, where we remove any remaining edge noise and select the filter ‘window’ to your preference...each window sounds a bit different...and allows more or less edge noise to get through to the audio output…</p>
<p>a text file from TOM’s, W4BQF, article about copying CW OVER 70 wpm is used...and demoN some of plugins while sending...<br/><a href="https://sites.google.com/site/tomw4bqf/copyingcwover70wpm">https://sites.google.com/site/tomw4bqf/copyingcwover70wpm</a></p>
<p><br/><a href="http://qrqcwnet.ning.com/forum/topics/home-brewed-software-code-practice-oscillator-vst-plugin">http://qrqcwnet.ning.com/forum/topics/home-brewed-software-code-practice-oscillator-vst-plugin</a><br/><a href="https://www.image-line.com/support/FLHelp/html/plugins/Minihost%20Modular.htm">https://www.image-line.com/support/FLHelp/html/plugins/Minihost%20Modular.htm</a><br/><a href="https://www.meldaproduction.com/MFreeFXBundle">https://www.meldaproduction.com/MFreeFXBundle</a><br/><a href="https://www.reaper.fm/reaplugs/">https://www.reaper.fm/reaplugs/</a><br/><a href="http://www.rs-met.com/freebies.html">http://www.rs-met.com/freebies.html</a></p>Transmit QRQ CW on your RIG in AFCW MODE - some advantages and tips on getting it to work well for qrq sendingtag:qrqcwnet.ning.com,2017-12-11:1993813:BlogPost:335252017-12-11T21:10:51.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/auAYTllC5-0?wmode=opaque" width="560"></iframe>
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<p>click on the YOUTUBE icon at the bottom of any video in this 6 part series that you are interested in to see its discussion notes and links</p>
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<p>One of the advantages of sending CW this way, is that you can send a very customized and optimized cw waveshape that has extremely low distortion and harmonic energy... extremely low key…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/auAYTllC5-0?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
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<p>click on the YOUTUBE icon at the bottom of any video in this 6 part series that you are interested in to see its discussion notes and links</p>
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<p>One of the advantages of sending CW this way, is that you can send a very customized and optimized cw waveshape that has extremely low distortion and harmonic energy... extremely low key clicks, and a very pleasant sound for the CW NOTE as compared to many rigs where you can not adjust the rise/fall time or the type of waveshape...be it R/C exponential, or raised cosine... </p>
<p>NOTE: at qrq cw speeds above 70 wpm, and especially over 100, the edge noise generated by even the best raised cosine waveshape with 8 ms rise/fall time...will still create lots of edge noise...ie - <em>from the percussive effect of the qrq impacts on the start of each element</em>...HOWEVER, passing the 8 ms raised cosine waveform through a CW AUDIO bandpass filter FIRST, before going to the RIG for transmit, will lower that edge noise to almost zero...so the combination of the ideal waveshape, RISE/FALL TIME, and an appropriate final audio bandpass filter, will create a CW NOTE that is far beyond what can be achieved by most of the commercial RIGs used for transmitting CW...when you transmit CW using AFCW MODE(a2 mode) if every precaution and tip that is described in the 6 videos above is followed...</p>Monitoring your SIDETONE from your MIC or LINE INPUT in Near Zero Low Latency delay using JACKROUTERtag:qrqcwnet.ning.com,2017-12-04:1993813:BlogPost:333252017-12-04T17:00:00.000ZChuck aa0hwhttp://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/77f9Am2xCjc?wmode=opaque" width="560"></iframe>
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<p>test results are shown(no sound on video) for hitting a lever that sends a TONE into the mic input jack of a laptop...a separate USB RECORDING MIC is placed at an equal distance from from both the LEVER and the SPEAKER (ABOUT 6 inches to mic from both the lever and the speaker) the MIC measures the TAP sound when hitting the LEVER and the final…</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/77f9Am2xCjc?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p>test results are shown(no sound on video) for hitting a lever that sends a TONE into the mic input jack of a laptop...a separate USB RECORDING MIC is placed at an equal distance from from both the LEVER and the SPEAKER (ABOUT 6 inches to mic from both the lever and the speaker) the MIC measures the TAP sound when hitting the LEVER and the final output from the speakers of the TONE....there will always be some delay...however, you can lower this significantly using a LOW LATENCY AUDIO engine like the JACK AUDIO CONNECTION KIT/ JACKROUTER <a href="http://jackaudio.org/">http://jackaudio.org/</a> JACK has versions for WINDOWS, MAC, LINUX and RASPERRY PI/arm</p>
<p><br/> Here is one of many articles about this topic:<br/> <a href="https://ask.audio/articles/how-to-achieve-true-zero-latency-monitoring-in-your-daw">https://ask.audio/articles/how-to-achieve-true-zero-latency-monitoring-in-your-daw</a></p>
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